spool /spuːl/

• 1. 

  N-COUNT A spool is a round object onto which thread, tape, or film can be wound, especially before it is put into a machine. (线、磁带或胶卷的) 卷轴

  例：

  ...the hissing of a tape rewinding on its spool.

  …磁带在卷轴上倒转时的嘶嘶声。